Kim Kardashian and Cristiano Ronaldo's hot hookup has just been upgraded to a real romance.

While this pairing's almost too pretty to be believed, sources say it's true. Not only did the reality star and the Portuguese soccer stud connect in Madrid recently, but one insider tells E! News that the two are "in daily contact" and "dating."

Last Monday, the budding couple was seen sneaking kisses while having a romantic dinner at La Dorado in the Spanish city. A different source says the couple left in separate cars but then went back to Ronaldo's mansion, where Kim spent several hours.